app: aboot: Add display panel id information in kernel command line
Add display panel id and DSI controller id information in
kernel command line argument. Display module on kernel side
parses this argument and selects the same panel as LK.
Here is the example string added in kernel command
line argument.
mdss_mdp.panel=1:dsi:0:qcom,<panel-id>
Change-Id: I57839428a314ccfba58432598e822122db688ffb
diff --git a/app/aboot/aboot.c b/app/aboot/aboot.c
index 7f9d0d1..ab52899 100755
--- a/app/aboot/aboot.c
+++ b/app/aboot/aboot.c
@@ -95,10 +95,12 @@
/* make 4096 as default size to ensure EFS,EXT4's erasing */
#define DEFAULT_ERASE_SIZE 4096
+#define MAX_PANEL_BUF_SIZE 64
static const char *emmc_cmdline = " androidboot.emmc=true";
static const char *usb_sn_cmdline = " androidboot.serialno=";
static const char *androidboot_mode = " androidboot.mode=";
+static const char *display_cmdline = " mdss_mdp.panel=";
static const char *loglevel = " quiet";
static const char *battchg_pause = " androidboot.mode=charger";
static const char *auth_kernel = " androidboot.authorized_kernel=true";
@@ -158,6 +160,7 @@
char max_download_size[MAX_RSP_SIZE];
char charger_screen_enabled[MAX_RSP_SIZE];
char sn_buf[13];
+char display_panel_buf[MAX_PANEL_BUF_SIZE];
extern int emmc_recovery_init(void);
@@ -265,6 +268,13 @@
break;
}
+ if (target_display_panel_node(display_panel_buf, MAX_PANEL_BUF_SIZE) &&
+ strlen(display_panel_buf))
+ {
+ cmdline_len += strlen(display_cmdline);
+ cmdline_len += strlen(display_panel_buf);
+ }
+
if (cmdline_len > 0) {
const char *src;
unsigned char *dst = (unsigned char*) malloc((cmdline_len + 4) & (~3));
@@ -376,7 +386,18 @@
while ((*dst++ = *src++));
break;
}
+
+ if (strlen(display_panel_buf)) {
+ src = display_cmdline;
+ if (have_cmdline) --dst;
+ while ((*dst++ = *src++));
+ src = display_panel_buf;
+ if (have_cmdline) --dst;
+ while ((*dst++ = *src++));
+ }
}
+
+
dprintf(INFO, "cmdline: %s\n", cmdline_final);
return cmdline_final;
}
@@ -2052,6 +2073,8 @@
target_serialno((unsigned char *) sn_buf);
dprintf(SPEW,"serial number: %s\n",sn_buf);
+ memset(display_panel_buf, '\0', MAX_PANEL_BUF_SIZE);
+
/* Check if we should do something other than booting up */
if (keys_get_state(KEY_VOLUMEUP) && keys_get_state(KEY_VOLUMEDOWN))
{